Steam-boiler furnace.



G. S. GALLAGHER.

STEAM BOILER FURNACE.

APPLIOATION'I'ILED AUG.13, 1910.

Patented Feb. 3,1914.

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COLUMBIA PLANOGRAPH Col. WASHINGTON D c G. S. GALLAGHER.

STEAM BOILER FURNACE.

APPLICATION FILED AUG. 13, 1910.

} Patented Feb. 3, 1914.

2 SHEETS-SHEET 2.

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UNITED? sTA'rEs PATENT oFFio GEORGE S. GALLAGHER, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF '10 HENRY GALLAGHER AND ONE-HALF T0 EMMA G. GALLAGHER, OF NEW YORK, N. Y.

STEAM-BOILER FURNACE.

Specification of letters Patent.

Application filed August 13, 1910. Serial N 0. 577,006.

furnace in proximity to the coal doors.

Heretofore, in these devices, the inner surfaces of the coal doors have been built up of brick. These surfaces have been liable to injury from heat, abrasion and other causes, and it has been difficult torepalr such parts, as there has been no means of supporting the walls of the furnace above such location and during such repalrs.

In the device of my improvement, I employ jamb-blocks of hollow cast metal with fire brick tile faces. The jamb-blocks are built into the furnace wall at each side of the door, and the fire brick tile faces cover and protect the same, completing the continuity of the surfaces, which, when worn, damaged or broken, can be removed without disturbing the wall or other parts and be replaced by new tiles, which are quickly put in place, and completely restore the structure, without loss of time and w1th a minimum of expense, all of which is hereinafter more particularly described. I

In the drawing, Figure 1, 1S a sectional plan through the front of a steam boller furnace at the coal door illustratingthe device of my invention; Fig. 2, is an elevation, as if the coal door and front plate of the furnace had been removed. Fig. 3, is

a perspective view of one of the jamb-blocks from the inner corner thereof; Fig. 4, is a perspective view of the fire brick tiles employed over the side of th1s amb-block, and Fig. 5, is a perspective view of the front tile for said jamb-block; Fig. 6, is a sectional plan similar to Fig. 1, also showing a form of my improvement, in which the steam boiler furnace is provided with two similar doors, making it necessary to employ a spacing block between the doors, Fig. 7 1s a perspective View of this spacing block; Fig. 8 is an end view and Fig. 9, a plan of the same spacing block; Fig. 10, is a perspective View of the end or corner fire brick tile for the spacing block, and Fig. 11, is a vertical section through the end of this spacing block and fire brick tile, showing a modified form of construction.

In all the figures of the drawing, similar letters and numerals ofcreference indicate similar parts.

a represents the front metal wall of a steam boiler furnace and a (4 the doors closing the coal openings into the combustion chamber of the furnace, which doors are of the usual construction, hung upon hinges and provided with latches for holding them closed.

6 represents the dead plate occupying a horizontal position at the base of the doors and forming the surface over which the coal is sh'oveled into the furnace, andv 0 represents an arch plate, which forms the top of the coal opening and is suitably supported at its ends, so as to hold up the front brick wall of the furnace over the coal openings, (Z, (Z are parts of the front brick wall of the furnace at either side of the coal doors, and 6 represents the grate-bars.

, Referring particularly to Figs. 1 to 5, inclusive, as well as to the left-hand side of Fig. 6, f and 9 represent. jamb-lolocks, which come at either side of the coal opening of the furnace, rest upon the dead-plate b and come between the same and the arch plate 0, so as to carry the ends of the arch plate and support the same and the brick wall above. Thej amb-blocks shown have the same construction, :but in reversed position and they fit into the right angle produced between the front wall a and the walls (Z, (5 This jamb-block is hollow in shape, it is a quadrilateral figure, that is to say, there are two corners in horizontal section, which are right angles, there is one corner an obtuse angle, andv one corner an acute angle. The jamb blocks are each provided with lugs f 9 through which and the front wall, bolts 2 are passed, which secure the jambblocks to the front wall a. Two of the vertical walls of these jamb-blocks, or, in other words, those exposed to the open part of the combustion chamber are preferably provided with horizontally disposed grooves 3 and perforations 4, the perforations coming at the bases of the grooves, and these jamb-blocks are also provided at the margins of the exposed faces with upwardly and Patented Feb. 3, 1914.

janib-block. The tiles 72, have parallel vertical faces and upper and lower parallel edges, which are grooved, with the inner edge shorter than the outer edges, and the outer face of the tile agreeing in vertical depth blocks, so that the pent up hot air within with the complete depth of the jamb-block, consequently, the tile or tiles hare connected to the jamb-block, by slipping the same into position from the smaller end of the iambblock toward the wider part with the ribs thus brought into the grooves of the tile, so that the tile, when in position, cover and protect the ribs and surface the side of the jamb-block. The tile i, as will be seen from Figs. 1 to 5 inclusive, is of a different shape from the tile 72, having a flat face, which is adapted to lie against the face of the jambblock and the end of the tile it, that would otherwise be exposed, and a curved vertical outer face and an end, which comes up against either wall (Z, or (P, and is slipped into place toward saidwall with the ribs 5 of the jamb-block in the groove of the tile, which protects the same.

Referring to Figs. 6 to 11, inclusive, the j amb-block and tile faces, shown on the left hand of Fig. 6, are the same as have been just described with reference to Figs. 1 and 5, inclusive, but Fig. 6, illustrates that the device of my invention, may be provided with two coal doors, a a in which case the intermediate supporting device for the arch plates and the front wall of the furnace, is provided with the form of a spacing block 76 in section of the form of a letter V, the broader end of which comes next to the front wall a of the furnace. This spacing block is advantageously connected to this wall by the lugs f and the bolts 2, employed for the jamb-blocks hereinbefore described. The spacing block is also provided with horizontally disposed grooves 3 and perforations 1, at the base of the grooves similar to the jamb-block, also with ribs 5 and 6 up from the lower edge and down from the upper edge, similar to the jamb-blocks and fire brick tiles Z, Z are employed, which are similar to the fire brick tiles 7b and are placed in position in the same manner, and also an end fire brick tile on coming next to the combustion chamber of the furnace and placed in position similar to the tile 2". These several tiles form faces to the jamb-blocks and spacing blocks, completely covering the faces thereof, protecting them from the heat of the combustion chamber of the furnace. Should these fire brick tiles become burned out, worn out, or broken, they can very quickly be removed and be replaced by new ones, slipped into position with the spaces between the same filled with cement and this may be done at a minimum of cost and very quickly, without in any way disturbing the structure of the front wall of the furnace.

I prefer to employ means providing for the escape of the heat within the iambblocks, in addition to the grooves 3 and perforations 4, shown and described in connection with the jamb-blocks and spacing the jamb-blocks, or spacing blocks, may escape. For this purpose, 111 Figs. 1 and 2,

I have shown holes 10 in the bottom of the jamb-blocks, which communicate with channels 11 built in the brick wall of the furnace and communicating with the ash pit below. In Fig. 6, I have for like purpose, shown holes 12 formed through the front wall a of the furnace, so that the hot air may escape into the atmosphere in front of the furnace, therefore, between these means, suitable ventilation is provided to keep the interior of the jamb-blocks and spacing blocks, as cool as possible.

In Fig. 11, I have shown the end tile m for the spacing block with a transverse horizontally disposed rib 13, adapted to be received in a channel formed in the end face of the spacing block, as an additional device for holding the end tile m in position. This form of construction applies with equal force to the construction of the fire brick tile 2' and either jamb-block f, although, I do not limit my invention to the use of this rib 13.

From Figs. 1 and 6, it will be apparent that the space between the dead plate 7), the arch plate 0 and the side members of the front wall, which in the device of my invention, are the fire brick tiles, increases in width from the door or doors toward the combustion chamber, because of the inclination given to the jamb-blocks and the spacmg block and their fire brick tile faces.

From the drawings, it will be noticed, that the corners of the ribs 5 and 6, are cut away, so as to provide for holding the fire brick tile in position and engagement with the jambblocks or spacing block.

I claim as my invention:

1. In a steam boiler furnace, a hollow spacing block tapering in plan from a larger to a smaller end and adapted to be built in the wall of a furnace with the smaller end toward the combustion chamber, marginal ribs in the smaller end and side portions on the said block extending upwardly from the lower part and down wardly from the upper part and spaced from the body of the block so as to provide grooves between the said ribs and the body of the block, and fire brick tiles provided with edge grooves adapted to receive the said ribs so that the tiles are moved horizontally to place on the block, the tile at the smaller end of the block extending over the adjacent edges of the tiles at the side of the block and being provided with a rounded outer surface.

2. In a steam boiler furnace, a spacing block adapted to be built in the front wall of the furnace and located between two coal doors, formed hollow and in plan in the shape of a letter V with the pointed end toward the combustion chamber and provided with end marginal ribs extending up from the lower part and downwardly from the upper part and spaced beyond the body of the said block, so as to provide grooves between the ribs and the body of the spacing block, and three fire brick tiles at the respective sides and point of the spacing block all agreeing in height with the height of the spacing block and the said tiles having grooves in the opposite edges to receive the ribs of the spacing block and to be slipped into position, two of said tiles covering and protect-ing the side faces of the spacing block and ribs thereof and one with a rounded point extending across the ends of the other two tiles and the smaller end of the spacing block.

Signed by me, this 9th day of August,

GEORGE S. GALLAGHER. Witnesses:

GEo. T. PINCKNEY, ARTHUR H. SERRELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

